<?php

/**
 * This is the model class for table "{{comment}}".
 *
 * The followings are the available columns in table '{{comment}}':
 * @property integer $id
 * @property string $content
 * @property integer $status
 * @property integer $create_time
 * @property string $author
 * @property string $email
 * @property string $url
 * @property integer $post_id
 *
 * The followings are the available model relations:
 * @property Post $post
 */
class Comment extends CActiveRecord {
	/**
	 *
	 * @var string status's name in {@link Lookup}
	 */
	const STATUS_NAME = 'CommentStatus';
	/**
	 *
	 * @var int
	 */
	const STATUS_PENDING = 1;
	/**
	 *
	 * @var int
	 */
	const STATUS_APPROVED = 2;
	/**
	 *
	 * @var int
	 */
	const STATUS_UNAPPROVED = 3;
	
	/**
	 *
	 * @return string the hyperlink display for the current comment's author
	 */
	public function getAuthorLink() {
		if (! empty ( $this->url ))
			return CHtml::link ( CHtml::encode ( $this->author ), $this->url );
		else
			return CHtml::encode ( $this->author );
	}
	/**
	 * Returns the static model of the specified AR class.
	 *
	 * @param string $className
	 *        	active record class name.
	 * @return Comment the static model class
	 */
	public static function model($className = __CLASS__) {
		return parent::model ( $className );
	}
	
	/**
	 *
	 * @return string the associated database table name
	 */
	public function tableName() {
		return '{{comment}}';
	}
	
	/**
	 *
	 * @return array validation rules for model attributes.
	 */
	public function rules() {
		// NOTE: you should only define rules for those attributes that
		// will receive user inputs.
		return array (
				
				array (
						'content, status, author, post_id', 
						'required' 
				), 
				
				array (
						'status, create_time, post_id', 
						'numerical', 
						'integerOnly' => true 
				), 
				
				array (
						'author, email, url', 
						'length', 
						'max' => 128 
				), 
				
				// The following rule is used by search().
				// Please remove those attributes that should not be searched.
				array (
						'id, content, status, create_time, author, email, url, post_id', 
						'safe', 
						'on' => 'search' 
				) 
		);
	}
	
	/**
	 *
	 * @return array relational rules.
	 */
	public function relations() {
		// NOTE: you may need to adjust the relation name and the related
		// class name for the relations automatically generated below.
		return array (
				'post' => array (
						self::BELONGS_TO, 
						'Post', 
						'post_id' 
				) 
		);
	}
	
	/**
	 *
	 * @return array customized attribute labels (name=>label)
	 */
	public function attributeLabels() {
		return array (
				'content' => Yii::t ( 'lng_comment', 'Comment_content' ), 
				'status' => Yii::t ( 'lng_comment', 'Comment_status' ), 
				'author' => Yii::t ( 'lng_comment', 'Comment_author' ), 
				'email' => Yii::t ( 'lng_comment', 'Comment_email' ), 
				'url' => Yii::t ( 'lng_comment', 'Comment_url' ), 
				'post_id' => Yii::t ( 'lng_comment', 'Comment_post_id' ) 
		);
		return array (
				'id' => 'ID', 
				'content' => 'Content', 
				'status' => 'Status', 
				'create_time' => 'Create Time', 
				'author' => 'Author', 
				'email' => 'Email', 
				'url' => 'Url', 
				'post_id' => 'Post' 
		);
	}
	
	/**
	 * Retrieves a list of models based on the current search/filter conditions.
	 *
	 * @return CActiveDataProvider the data provider that can return the models based on the search/filter conditions.
	 */
	public function search() {
		// Warning: Please modify the following code to remove attributes that
		// should not be searched.
		$criteria = new CDbCriteria ();
		
		$criteria->compare ( 'id', $this->id );
		$criteria->compare ( 'content', $this->content, true );
		$criteria->compare ( 'status', $this->status );
		$criteria->compare ( 'create_time', $this->create_time );
		$criteria->compare ( 'author', $this->author, true );
		$criteria->compare ( 'email', $this->email, true );
		$criteria->compare ( 'url', $this->url, true );
		$criteria->compare ( 'post_id', $this->post_id );
		
		return new CActiveDataProvider ( $this, array (
				'criteria' => $criteria 
		) );
	}
	
	/**
	 * 保存前确定是否新记录，如果是则给记录的create_time赋值（覆盖），并返回true.
	 *
	 * @see CActiveRecord::beforeSave()
	 */
	protected function beforeSave() {
		if (parent::beforeSave ()) {
			if ($this->isNewRecord)
				$this->create_time = TIMESTAMP;
			return true;
		} else
			return false;
	}
	
	/**
	 * 返回当前comment所在的post的链接及描点
	 *
	 * @param Post $post        	
	 * @return string
	 */
	public function getUrl($post) {
		return Yii::app ()->createAbsoluteUrl ( 'post/view', array (
				'id' => $post->id 
		) ) . '#comment' . $this->id;
	}
	public function approve() {
		$this->status = Comment::STATUS_APPROVED;
		$this->update ( array (
				'status' 
		) );
	}
}